I didn't know about the 4-6v batts. And to tell you the truth, even though I know you can get 12v by wiring them in series that's about all I know. If it were me, I might go and buy a 12v battery and inverter because I'm unsure how the inverter would work with your current setup. With all of the switches, the trailer inverter, etc. I'd be afraid to hook it into there because of all of that electrical and not being sure of the outcome. Maybe someone else has a better answer for you.
NO TV!!! NOW WHAT???
2014 Coachmen Apex 259BHSS